If you use the supported means to create services such as:
Fog::Service.new(:provider => "Example")
It already loads the contents of `~/.fog` and filters the values based
on if they are recognised or required.
That means in a number of services that are initialising based on
`options` or a value from `Fog.credentials` both are the same.
The `options` should have been loaded and merged from credentials in the
service "builder".
